Grooved Heat Dissipation Support with Oxide Coating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vapor chambers with sintered powder support structures face a trade-off between capillary attraction and fluid resistance, leading to poor vapor-liquid flowability and reduced heat dissipation efficiency due to increased porosity.
Innovation Solution
A support structure with a main body having grooves and an oxide coating, such as a hydrophilic silicon dioxide coating, is used to enhance vapor-liquid circulation by reducing fluid resistance and providing directional capillary attraction, replacing the sintered powder body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the porosity of the capillary structure is increased to enhance capillary attraction, then the working fluid can flow back more effectively, but the resistance against the fluid increases, reducing flowability
Solution Approach 1:
The support structure is divided into multiple groove channels that segment the fluid flow path. This segmentation allows the fluid to flow through defined pathways rather than navigating through dense porous material, reducing resistance while maintaining capillary attraction through the groove surfaces.
Solution Approach 2:
The invention uses groove structures with oxide coating instead of traditional sintered porous materials. The groove surfaces provide capillary action through their geometry and surface properties (oxide coating) rather than through porous structure, eliminating the trade-off between porosity and flow resistance.
2Strength
If conventional sintered powder body is used for support structure, then structural support is provided, but vapor-liquid circulation efficiency is reduced due to high fluid resistance
Solution Approach 1:
The invention changes the fundamental parameter of the support structure from porous material to groove-based structure with oxide coating. This parameter change maintains structural support capability while dramatically improving fluid circulation by eliminating the resistance inherent in porous materials.
Solution Approach 2:
The support structure combines the main body material (providing structural support) with an oxide coating layer (providing capillary properties). This composite approach separates the support function from the capillary function, allowing optimization of each independently.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly improves vapor-liquid circulation and heat dissipation efficiency by allowing the working fluid to flow more easily and quickly within the heat dissipation unit, effectively addressing the limitations of conventional vapor chambers.
Implementation Method 1
The support structure not only can provide support effect, but also can make the working fluid flow from the condensation end of the upper board back to the evaporation end of the lower board under capillary attraction
Implementation Method 2
An oxide coating, such as a hydrophilic SiO2 coating, is used to enhance vapor-liquid circulation by reducing fluid resistance
Data Source
AI summary
A support structure for heat dissipation unit includes at least one main body and an oxide coating. Multiple grooves are formed on an outer circumference of the main body. The oxide coating is coated on the outer circumference of the main body and the surfaces of the grooves. The sintered powder body can be replaced with the support structure with the directional oxide coating coated on the outer circumference of the main body and the surfaces of the grooves to greatly speed the vapor-liquid circulation of the working fluid in the chamber of the heat dissipation unit so as to enhance the heat dissipation performance.